i didn't really understand the science behind what we call the learning connection. and i think that's, you know, it's something i learned very closely from dr. david satcher who wrote a report about the learning connection about seven, eight years ago. >> 2005. >> 2005. and what it is, there's an impact on a child's ability to learn and the number one impact is that they're nourished and they're physically a lly active. it has an impact on their performance, behavior, attendance. all these issues we hear about each day. you wonder sometimes in this country why it is that we're 25th or 15th in science or math. all of these things add up. you have to have a healthy child in order to be a good academic performer. >> we're looking at a full screen. that's very interesting. if you look at picture on the left that is what t.j.'s brain scan looks like 24 hours a day. >> it's actually a preadolescent child. same thing. good point. >> to the right, obviously, after 20 minutes of walking, you see the brain much more stimulated. again, something that t.j. hasn't seen since he